A dash in metal vehicle that's armoured (7)
I believe the answer is:
saracen
'vehicle that's armoured' is the definition.
I can't tell whether this defines the answer.
'a dash in metal' is the wordplay.
'dash' becomes 'race' (I've seen this in another clue).
'in' means one lot of letters goes inside another.
'metal' becomes 'sn' (Sn is the atomic symbol for tin).
'a'+'race'='arace'
'arace' put inside 'sn' is 'SARACEN'.
Can you help me to learn more?
(Other definitions for saracen that I've seen before include "Arab or Muslim at time of the Crusades" , "Muslim defender in Crusades" , "Ear scan (anag.)" , "Muslim opposing the Crusades" , "Arab (opposing the Crusaders)" .)